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Human patient samples were recovered from the archives of the Department of Pathology at the Korea Cancer Center Hospital. The consent medical records of the patients corresponding to these cases were reviewed. This study was permitted by the Institutional Review Board of the Korea Cancer Center Hospital. In case of mice studies, animal procedures were approved by the Institutional Animal Care and Use Committee (IACUC) of the Center for Laboratory Animal Sciences, the Medical Research Coordinating Center, and the HYU Industry-University Cooperation Foundation.

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On the behalf of all co-authors, I provide the consent for publication of this manuscript.

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The authors declare that they have no competing interests.

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